Search - Fast Fourier Transform

[Other resource] 傅里叶变化

Description: 快速付里叶变换子程序所需 RAM 空间以输入的首地址为基址,向增加的方向扩展-Fast Fourier Transform subroutine RAM space required to input the first address of the site was to increase the direction of expansion
Platform: | Size: 1901 | Author: 江丰 | Hits:

[Other resource] code.tar

Description: 快速傅立叶变换程序代码,学信号的同学,可要注意了-Fast Fourier Transform code, the students learn signal, I must remind the
Platform: | Size: 294695 | Author: 陈sir | Hits:

[Other resource] FFT_C++

Description: 用C++实现的快速傅立叶变换（FFT）的结构算法，其功用就不用细说了吧-C realized Fast Fourier Transform (FFT) algorithm structure, its purpose would not have to elaborate on it
Platform: | Size: 3323 | Author: 黄如意 | Hits:

[Windows Develop] 二维快速傅立叶变换

Description: This document introduces the techniques of fast Fourier transform and gives a source code in C for computing 2D FFT on image data.
Platform: | Size: 31491 | Author: 冰城 | Hits:

[Other resource] 二维小波变换

Description: 关于二维小波变换的程序 [精华] 说明：此算法重在概念，速度并不是很快。因为FOR循环的缘故。此程序从循环矩阵的观点出发，把圆周卷积和快速幅里叶变换建立了联系。实现了分解和无失真重构。它只做了一层分解，即将256x256图形分解成为64x64的四个图形，避免了使用WKEEP()的困惑。主要思想为用小波滤波器族构造正交阵W,变换写为B=W*A*W ,反变换为：A=W *A*W,这与所有正交变换无异。W为循环正交矩阵，因此可用FFT实现快速运算，难点就在重构矩阵上。若用矩阵概念明确，一个共扼转置可以搞顶。但FFT的使用必须找到与分解序列的关系。-on Wavelet Transform procedures [best] Note : This algorithm important concept is not speed quickly. Because FOR cycle nowadays. This program cycle from the point of view of Matrix, circular convolution and fast Fourier transform is established links. To achieve the decomposition and reconstruction without distortion. It only had one decomposition, 256x256 graphics will be 64x64 decomposition of the four graphics, avoiding the use of WKEEP () confusion. The main idea of using wavelet filter generator orthogonal array W, write to transform B = W * A * W, anti-Transform : A = W * A * W, which is orthogonal transformation all the same. W cycle orthogonal matrix, can be used to achieve rapid FFT computation, on the difficult reconstruction matrix. If a clear matrix concept, a home to a total o
Platform: | Size: 3785 | Author: 罗松溪 | Hits:

[Graph program] FFT4

Description: This program produces a Frequency Domain display from the Time Domain data input using the Fast Fourier Transform. -This program produces a Frequency Domain display from the Time Domain data input using the Fast Fourier Transform.
Platform: | Size: 7003 | Author: 张三丰 | Hits:

[Other resource] fftdll

Description: 快速傅立叶变换FFT的动态链接库DLL，适合个种语言，VB，VC，delphi-FFT fast Fourier transform of the DLL, suitable species language, VB, VC, Delphi, etc.
Platform: | Size: 23889 | Author: 可永 | Hits:

[Mathimatics-Numerical algorithms] vbC10

Description: 用VB实现的傅立叶变换谱方法包括复数据快速傅立叶变换算法、实数据快速傅立叶变换算法1、实数据快速傅立叶变换算法2、快速正弦变换和余弦变换等-VB Fourier transform spectra data including Minute Fast Fourier Transform algorithm, false information Fast Fourier Transform algorithm for one, real data Fast Fourier Transform algorithm 2, rapid transformation sine and cosine transform, etc.
Platform: | Size: 3968 | Author: 刘立立 | Hits:

[Other resource] vbfft_04418300

Description: 用vb实现快速傅立叶变换，运行速度达到最优化，可以c代码媲美，因此可以实现实时傅立叶变换。实现模块化，直接作为一个模块调用即可，非常方便！-with vb fast Fourier transform, speed of operation to achieve the most optimized code can be comparable to c, it can achieve real-time Fourier transform. To achieve modular, as a direct call modules can be very convenient!
Platform: | Size: 6108 | Author: 小笨 | Hits:

[Other resource] ditfft

Description: 用matlab编写的fft快速傅立叶变换及逆变换函数,其中flip1是供ditfft函数调用的倒叙子函数。-using Matlab fft prepared by the fast Fourier transform and inverse transform function, which is flip1 ditfft function call for the Warrior unreachable.
Platform: | Size: 1472 | Author: 柳艾飞 | Hits:

[Other resource] lab1-suyan

Description: 自制的快速傅立叶变换函数，可以用来对比工具自带的fft函数，比较其执行时间随Ｎ值变化的情况-privately fast Fourier transform function can be used to contrast the instruments onboard fft function, compared with the time of its implementation N changes in the value of
Platform: | Size: 131923 | Author: 苏燕 | Hits:

[Other] 快速傅立叶变换FFT及信号的谱分析

Description: 用快速傅立叶变换FFT实现信号的谱分析，包括FFT程序，谱分析程序和绘图程序-using Fast Fourier Transform FFT spectrum analysis of the signals, including FFT procedures, spectral analysis procedures and drawing program
Platform: | Size: 7014 | Author: 孙涛 | Hits:

[Other resource] ImageFFT2

Description: VC编写的高效的图象2D快速傅立叶正变换程序,编译通过.适合256色bmp图象变换.效果和matlab的fft2()没法比,但是程序值得借鉴.适合图象处理初学者,有助于理解傅立叶变换在图象处理中的重要作用.-VC efficient preparation of the image is 2D fast Fourier transform procedures compile. Bmp for 256-color image transformation. Results and Matlab fft2 () no match for, but the procedure is worth learning from. Image processing for beginners, helps to understand Fourier transform in the image processing an important role.
Platform: | Size: 84787 | Author: 李安定 | Hits:

[Other resource] 字图像获取处理及实践应用一书光盘

Description: 图像处理光盘里面附带了很多在图像处理中经常用到的基本处理算法，如快速傅立叶变换，中值滤波等-image processing fringe discs inside a lot in image processing frequently used to deal with the basic algorithm, as Fast Fourier Transform, the value filter
Platform: | Size: 2410394 | Author: 张震 | Hits:

[Windows Develop] FFT of waveIn audio signals

Description: The Fast Fourier Transform (FFT) allows users to view the spectrum content of an audio signal. The FFT code presented here was written by Don Cross though his homepage appears to have subsequently been taken down. Rather than explain the mathematical theory of the FFT, I will attempt to explain its usefulness as it relates to audio signals-The Fast Fourier Transform (FFT) allows us ers spectrum to view the content of an audio sign al. The FFT code presented here was written by Do n Cross though his homepage appears to have subs equently been taken down. Rather than explain t he mathematical theory of the FFT. I will attempt to explain its usefulness as it re Lates to audio signals
Platform: | Size: 22612 | Author: 冰城 | Hits:

[Other resource] 频谱分析程序

Description: 频谱分析技术是研究周期性现象中最为常用的一种统计分析方法，其主要是通过对一复合的波系进行数据变换，将其分解成若干振幅和相位不同的简谐波，并找出其中振幅最大的波，即该复合波中的主要频率。频谱分析的方法较多，其中最常用的是快速傅立叶变换法(FFT)-spectrum analysis techniques to study the cyclical phenomenon most commonly used a statistical analysis method, its principal is a composite of the wave data transformation, its decomposition into a number of different amplitude and phase of the harmonic, and finding the biggest wave amplitude, which is the compound of the main wave frequency. Spectrum analysis method more, the most common of which is a fast Fourier transform (FFT)
Platform: | Size: 3622 | Author: 郭泽清 | Hits:

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